Home / 20,811.56-28,686.23-16,266.30

Finding the Fourth Proportional to 20,811.56, 28,686.23 and 16,266.30

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Solution

The fourth proportional to 20,811.56, 28,686.23 and 16,266.30 is: 22,421.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.56 : 28,686.23 = 16,266.30 : x
  2. Step 2: Convert to fraction form
    20,811.56/28,686.23 = 16,266.30/x
  3. Step 3: Cross multiply
    20,811.56x = 28,686.23 × 16,266.30
  4. Step 4: Simplify right side
    20,811.56x = 466,618,741.72
  5. Step 5: Solve for x
    x = 466,618,741.72/20,811.56
  6. Step 6: Final answer
    x = 22,421.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.